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RedHat Security Alert RHSA-2020-2429-01: Critical Kernel Fixes and Updates

red hat
Calendar Grey June 9, 2020
Dist Redhat Esm H88
Ubuntu's Essential software patch tackles severe vulnerabilities, boosts defenses against attacks.
An update for kernel is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)
* Kernel: s390: page table upgrade in secondary address mode may lead to privilege escalation (CVE-2020-11884)
* kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body (CVE-2020-12657)
* kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840684)
* missing version.h dependency for modpost may cause build to fail (BZ#1828227)
* efi: kernel panic during ltp fs test - read_all -d /sys -q -r 10 (BZ#1829525)

Topics%20covered

Topics Covered

security advisory denial of service red hat privilege escalation bug fix important kernel

References

https://access.redhat.com/security/cve/CVE-2019-18660 https://access.redhat.com/security/cve/CVE-2020-10711 https://access.redhat.com/security/cve/CVE-2020-11884 https://access.redhat.com/security/cve/CVE-2020-12657 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/solutions/5142691

Package List

Red Hat Enterprise Linux BaseOS E4S (v. 8.0):
Source: kernel-4.18.0-80.23.2.el8_0.src.rpm
aarch64: bpftool-4.18.0-80.23.2.el8_0.aarch64.rpm bpftool-debuginfo-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-core-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-cross-headers-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debug-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debug-core-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debug-debuginfo-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debug-devel-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debug-modules-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debug-modules-extra-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debuginfo-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-devel-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-headers-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-modules-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-modules-extra-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-tools-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-tools-debuginfo-4.18.0-80.23.2.el8_0.aarch64.rpm kernel-tools-libs-4.18.0-80.23.2.el8_0.aarch64.rpm perf-4.18.0-80.23.2.el8_0.aarch64.rpm perf-debuginfo-4.18.0-80.23.2.el8_0.aarch64.rpm python3-perf-4.18.0-80.23.2.el8_0.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2429-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2429
Issue date: 2020-06-09

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.0Update Services for SAP Solutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service red hat privilege escalation bug fix important kernel

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS E4S (v. 8.0) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1777825 - CVE-2019-18660 kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure

1825116 - CVE-2020-10711 Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic

1828149 - CVE-2020-11884 Kernel: s390: page table upgrade in secondary address mode may lead to privilege escalation

1832866 - CVE-2020-12657 kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body

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